Nissan 18hp Water Pumping Issues?

[tohatsu9.9guy]

I have 18hp Nissan that I just did a powerhead swap on. Model is NS18C2. The motor was originally a 9.9hp NS9.9B2, but I swapped powerheads. The motor pumps water good, but I am curious if water is coming out of everywhere on the motor that it is supposed to. There is a place with two holes about half way down the leg (see pic, as I do not know the name of this) where I thought water was supposed to come out of. I may be wrong.. If water is supposed to come from here, then what could be the cause of the lack of water, and how should I fix it? Also, how do you check/ set timing on these motors? It should be close, but I'm paranoid that I may have thrown it a little off during the swap, as I had to mess with a linkage or two. I'm posting a youtube link to a video of the motor running. Thanks. -Matt

Video of the motor running: http://www.youtube.com/watch?v=my7iTzI68Us

 

[Sea Rider]

Re: Nissan 18hp Water Pumping Issues?

Seems ok, when runing on muffs water comes out from different places, as long as you see water outing through peeing hole, mufler exhaust hole and through prop, nothing to worry. If engine runs great, dont mess with timming...

Happy Boating

 

[pvanv]

Re: Nissan 18hp Water Pumping Issues?

For full info on how to set the link and sync, grab your copy of the Factory service manual (available from any dealer, including me), and follow the pictured steps. That will allow you to both set the carb for proper operation, and have the correct magneto advance.

 

[tohatsu9.9guy]

Re: Nissan 18hp Water Pumping Issues?

For full info on how to set the link and sync, grab your copy of the Factory service manual (available from any dealer, including me), and follow the pictured steps. That will allow you to both set the carb for proper operation, and have the correct magneto advance.

I have a manual for it. So as long as its got water coming through the prop hub I'm ok? What are the holes in the leg I circled in red for?

 

[pvanv]

Re: Nissan 18hp Water Pumping Issues?

Those are drains.